Air navigation chart V30 (series). 74. Lat. 30° S-14° S. long. 128° W-156° W. Scale 1″ = 30 naut. m. (1:2,188,-800) at lat. 22° 30′, contour interval 1,000, 2,000, 3,000, 5,000 and 7,000 ft.